Transputers are processors which are well suited for the parallel implementation of medium and high-level image processing algorithms. The serial data Links may well be used for data interchange within the image processing task. They form, however, a bottleneck with respect to loading and unloading of mass data with video data rates. During the last years a parallel Transputer system was develo...

This study aimed to clarify the relationship between media, learners’ perception of social presence, and output in communicative learning using synchronous computer-mediated communication (SCMC). In this study, we developed four types of SCMC: videoconferencing (image and voice), audioconferencing (voice but no image), text chat with image (image but no voice), and plain text chat (no image and...

This paper introduces our recent research work on the development of a scalable foveated visual information coding and communication system, which follows two emerging trends in visual communication research. One is to design rate scalable image and video codecs, which allow the extraction of coded visual information at continuously varying bit rates from a single compressed bitstream. The othe...

This paper introduces our recent research work on the development of a scalable foveated visual information coding and communication system, which follows two emerging trends in visual communication research. One is to design rate scalable image and video codecs, which allow the extraction of coded visual information at continuously varying bit rates from a single compressed bitstream. The othe...

In this study, a system of encryption based on chaotic sequences is described. The system is used for encrypting digital image data for the purpose of secure image transmission. An image secure communication scheme based on Logistic map chaotic sequences with a nonlinear function is proposed in this paper. Encryption and decryption keys are obtained by one-dimensional Logistic map that generate...

A remote articulation test system with multimedia communication has been developed in order that outside speech-language-hearing therapists (STs) can exam pronunciations of the students in special education classes in regular elementary schools and give advice to their teachers. The proposed system has video and voice communication and image transmission functions based on WebRTC. Using image t...